The factory produces half a million pairs of shoes every year, 80% ____ are sold abroad.
| A．of which | B．which of | C．of them | D．of that |
Father went to his doctor for ________ about his heart trouble .
| A．an advice | B．advice | C．advices | D．the advices |
A good student is good at _______ what the teacher says at once when hearing something important in class .
| A．getting down | B．passing down | C．setting down | D．coming down |
in a white uniform, he looks more like a cook than a doctor.
| A．Dressed | B．To dress | C．Dressing | D．Having dressed |
Do come here tomorrow,we will enjoy the live performance by the “Heart-to-Heart” Art Troupe.
| A．or | B．while | C．and | D．however |
Edward, you play so well. But I you played the piano.
| A．didn’t know | B．hadn’t know | C．don’t know | D．haven’t known |